<template>
  <el-container class="home-container">
    <!-- 头部区域 -->
    <el-header>
      <div>
        <img src="../assets/home_logo.png" />
        <span>应有尽有电商管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!-- 页面主体区域 -->
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="iscollapse ? '64px' : '200px'">
        <!-- 按钮 -->
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <!-- 侧边栏菜单区域 -->
        <el-menu
          background-color="#545c64"
          text-color="#fff"
          active-text-color="#ffd04b"
          :unique-opened="true"
          :collapse="iscollapse"
          :collapse-transition="false"
          router
          :default-active="activePath"
        >
          <!-- 一级菜单 -->
          <el-submenu
            :index="item.id + ''"
            v-for="item in menulist"
            :key="item.id"
          >
            <!-- 一级模板区域 -->
            <template slot="title">
              <!-- 图标 -->
              <i :class="iconObj[item.id]"></i>
              <!-- 文本 -->
              <span>{{ item.authName }}</span>
            </template>

            <!-- 二级菜单 -->
            <el-menu-item
              :index="'/' + subItem.path"
              v-for="subItem in item.children"
              :key="subItem.id"
              @click="saveNavState('/' + subItem.path)"
            >
              <template slot="title">
                <!-- 图标 -->
                <i class="el-icon-menu"></i>
                <!-- 文本 -->
                <span>{{ subItem.authName }}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 右侧主体区域 -->
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data() {
    return {
      menulist: [],
      iconObj: {
        125: 'iconfont icon-user',
        103: 'iconfont icon-tijikongjian',
        101: 'iconfont icon-shangpin',
        102: 'iconfont icon-danju',
        145: 'iconfont icon-baobiao'
      },
      iscollapse: true,
      activePath: ''
    }
  },
  methods: {
    logout() {
      window.sessionStorage.clear()
      this.$router.push('./login')
    },
    toggleCollapse() {
      this.iscollapse = !this.iscollapse
    },
    /* 获取所有菜单 */
    async grtMenuList() {
      const { data: res } = await this.$http.get('menus')
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.menulist = res.data
      console.log(res)
    },
    /* 保存链接的激活状态 */
    saveNavState(activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = window.sessionStorage.getItem('activePath')
    }
  },
  created() {
    this.grtMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  }
}
</script>

<style lang="less" scoped>
.home-container {
  height: 100%;
}

.el-header {
  background-image: linear-gradient(to bottom, #222222, rgb(76, 106, 116));
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;
  font-weight: 900;
  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 18px;
    }
  }
}

.el-aside {
  background-color: #545c64;
  .el-menu {
    border-right: none;
    font-weight: 700;
  }
}

.el-main {
  background-color: #ffffff;
}
.iconfont {
  padding-right: 15px;
}
.toggle-button {
  background-image: linear-gradient(to bottom, rgb(76, 106, 116), #545c64);
  font-size: 10px;
  font-weight: 900;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
}
/* 99ccff */
</style>
